From: Alex Williamson Date: Fri, 29 Jun 2012 15:56:16 +0000 (-0600) Subject: KVM: Add missing KVM_IRQFD API documentation X-Git-Tag: v3.5~90^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f36992e31284131a978d07bb14e582ce67b46b64;p=platform%2Fkernel%2Flinux-amlogic.git KVM: Add missing KVM_IRQFD API documentation Signed-off-by: Alex Williamson Acked-by: Michael S. Tsirkin Signed-off-by: Marcelo Tosatti --- diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 9301266..2c99483 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -1930,6 +1930,23 @@ The "pte_enc" field provides a value that can OR'ed into the hash PTE's RPN field (ie, it needs to be shifted left by 12 to OR it into the hash PTE second double word). +4.75 KVM_IRQFD + +Capability: KVM_CAP_IRQFD +Architectures: x86 +Type: vm ioctl +Parameters: struct kvm_irqfd (in) +Returns: 0 on success, -1 on error + +Allows setting an eventfd to directly trigger a guest interrupt. +kvm_irqfd.fd specifies the file descriptor to use as the eventfd and +kvm_irqfd.gsi specifies the irqchip pin toggled by this event. When +an event is tiggered on the eventfd, an interrupt is injected into +the guest using the specified gsi pin. The irqfd is removed using +the KVM_IRQFD_FLAG_DEASSIGN flag, specifying both kvm_irqfd.fd +and kvm_irqfd.gsi. + + 5. The kvm_run structure ------------------------